static void
axis_handler(struct widget *widget, struct input *input, uint32_t time,
uint32_t axis, wl_fixed_t value, void *data)
{
struct image *image = data;
if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL &&
input_get_modifiers(input) == MOD_CONTROL_MASK) {
/* set zoom level to 2% per 10 axis units */
zoom(image, (1.0 - wl_fixed_to_double(value) / 500.0));
window_schedule_redraw(image->window);
} else if (input_get_modifiers(input) == 0) {
if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
move_viewport(image, 0, wl_fixed_to_double(value));
else if (axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL)
move_viewport(image, wl_fixed_to_double(value), 0);
}
}
/**
* \brief CALLBACK function, Wayland informs about key event
* \param window window
* \param key keycode
* \param unicode associated character
* \param state pressed or released
* \param modifiers modifiers: ctrl, alt, meta etc.
* \param data user data associated to the window
*/
static void
key_handler(struct window *window, struct input *input, uint32_t time,
uint32_t key, uint32_t unicode, enum wl_keyboard_key_state state,
void *data)
{
uint32_t modifiers = input_get_modifiers(input);
if (!log_key)
return;
printf("key key: %u, unicode: %u, state: %s, modifiers: 0x%x\n",
key, unicode,
(state == WL_KEYBOARD_KEY_STATE_PRESSED) ? "pressed" :
"released",
modifiers);
}
static void
key_handler(struct window *window,
struct input *input, uint32_t time,
uint32_t key, uint32_t sym, enum wl_keyboard_key_state state,
void *data)
{
struct editor *editor = data;
struct text_entry *entry;
const char *new_char;
char text[16];
if (!editor->active_entry)
return;
entry = editor->active_entry;
if (state != WL_KEYBOARD_KEY_STATE_PRESSED)
return;
switch (sym) {
case XKB_KEY_BackSpace:
text_entry_commit_and_reset(entry);
new_char = utf8_prev_char(entry->text, entry->text + entry->cursor);
if (new_char != NULL)
text_entry_delete_text(entry,
new_char - entry->text,
(entry->text + entry->cursor) - new_char);
break;
case XKB_KEY_Delete:
text_entry_commit_and_reset(entry);
new_char = utf8_next_char(entry->text + entry->cursor);
if (new_char != NULL)
text_entry_delete_text(entry,
entry->cursor,
new_char - (entry->text + entry->cursor));
break;
case XKB_KEY_Left:
text_entry_commit_and_reset(entry);
new_char = utf8_prev_char(entry->text, entry->text + entry->cursor);
if (new_char != NULL) {
entry->cursor = new_char - entry->text;
if (!(input_get_modifiers(input) & MOD_SHIFT_MASK))
entry->anchor = entry->cursor;
widget_schedule_redraw(entry->widget);
}
break;
case XKB_KEY_Right:
text_entry_commit_and_reset(entry);
new_char = utf8_next_char(entry->text + entry->cursor);
if (new_char != NULL) {
entry->cursor = new_char - entry->text;
if (!(input_get_modifiers(input) & MOD_SHIFT_MASK))
entry->anchor = entry->cursor;
widget_schedule_redraw(entry->widget);
}
break;
case XKB_KEY_Escape:
break;
default:
if (xkb_keysym_to_utf8(sym, text, sizeof(text)) <= 0)
break;
text_entry_commit_and_reset(entry);
text_entry_insert_at_cursor(entry, text, 0, 0);
break;
}
widget_schedule_redraw(entry->widget);
}
